Quantum chemistry simulation of iridium sulphamate aquacomplexes composition and mechanisms of their activation in electrochemistry processes of metal deposition on surface of gallium arsenide are taken under consideration. The model is under construction on initial gross formula of bi-nuclear iridium complexes and the coordination theory of complexes. Proposed compositions of two iridium sulphamate supracomlexes allow to account for solution coloration and increasing of metal yield on current in electrochemistry processes of metal deposition on surface of gallium arsenide by using of electrolyte cathodic treatment. Assumption of that main limitative stage is a process of heavy bi-nuclear iridium complexes jump diffusion between neighboring cages inside quasi-crystallized aqua-molecular environment permits to obtain estimation for average thermal relaxation time of any iridium supracomplex coherent quantum excitations within cages: τ ~ 2,5 • 10^-8 sec. It means that radio-frequency osc

illations with ν > 1/τ ~ 40 MHz are able to generate coherent effects of iridium supracomplex motion within diffusion cages of electrolyte. Resonant absorption of RF-field within diffusion cages is conditioned by rotational quantum transitions of iridium supracomplexes. It is shown that diffusion coefficients D must have two maximum peaks on frequencies 160 MHz and 190 MHz. It reveals observable peaks of iridium yield on current influenced upon RF-field on frequencies approximately 130 MHz and 190 MHz.